Line chart with fixed size slider. Slider can only be moved from side to side.
Last active
September 16, 2017 07:38
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Fixed size slider
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
.line { | |
fill: none; | |
stroke: steelblue; | |
stroke-width: 1.5px; | |
} | |
/*.handle { | |
pointer-events: none; | |
}*/ | |
</style> | |
<head> | |
</head> | |
<body> | |
<script src="//d3js.org/d3.v4.min.js"></script> | |
<script> | |
function randomData(samples) { | |
var data = [], | |
random = d3.randomNormal(); | |
for (i = 0; i < samples; i++) { | |
data.push({ | |
id: i + 1, | |
y: d3.format(".3")(random()) | |
}); | |
} | |
return data; | |
} | |
var data = randomData(200); | |
var margin = {top: 20, right: 20, bottom: 30, left: 50}, | |
width = 560 - margin.left - margin.right, | |
height = 260 - margin.top - margin.bottom; | |
var x = d3.scaleLinear() | |
.range([0, width]); | |
var y = d3.scaleLinear() | |
.range([height, 0]); | |
var line = d3.line() | |
.x(function(d) { return x(d.id); }) | |
.y(function (d) { return y(d.y); }); | |
var brush = d3.brushX() | |
.extent([[0, 0], [width, height]]); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width + margin.left + margin.right) | |
.attr("height", height + margin.top + margin.bottom) | |
.append("g") | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
data.forEach(function (d) { | |
Object.keys(data[0]).forEach(function (k) { | |
d[k] = +d[k]; | |
}); | |
}); | |
x.domain(d3.extent(data, function(d) { return d.id; })); | |
y.domain(d3.extent(data, function (d) { return d.y; })); | |
var gX = svg.append("g") | |
.attr("class", "axis axis--x") | |
.attr("transform", "translate(0," + height + ")") | |
.call(d3.axisBottom(x)); | |
var gY = svg.append("g") | |
.attr("class", "axis axis--y") | |
.call(d3.axisLeft(y)); | |
svg.append("path") | |
.datum(data) | |
.attr("class", "line") | |
.attr("d", line); | |
var gBrush = svg.append("g") | |
.attr("class", "brush") | |
.call(brush) | |
.call(brush.move, [x(60), x(120)]); | |
// removes handle to resize the brush | |
d3.selectAll('.brush>.handle').remove(); | |
// removes crosshair cursor | |
d3.selectAll('.brush>.overlay').remove(); | |
</script> | |
</body> |
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